Effects of Sweet Sorghum Intercropping with Lablab Purpureus on Yield and Quality of Mixed Forage in Chengdu Plain,China

doi:10.11733/j.issn.1007-0435.2021.07.026

Acta Agrestia Sinica ›› 2021, Vol. 29 ›› Issue (7): 1578-1583.DOI: 10.11733/j.issn.1007-0435.2021.07.026

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Effects of Sweet Sorghum Intercropping with Lablab Purpureus on Yield and Quality of Mixed Forage in Chengdu Plain,China

DONG Zhi-xiao¹, HE Run-hao¹, KUANG Jian-yang¹, NIE Cong¹, YANG Jian¹, ZHANG Jian-bo², GOU Wen-long², MA Xiao¹

1. College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, China;
2. Sichuan Academy of Grassland Sciences, Chengdu, Sichuan Provence 611731, China

Received:2021-03-10 Revised:2021-03-30 Online:2021-07-15 Published:2021-07-31

成都平原甜高粱间作拉巴豆对混合饲草产量及品质的影响

董志晓¹, 何润濠¹, 况鉴洋¹, 聂聪¹, 杨建¹, 张建波², 苟文龙², 马啸¹

1. 四川农业大学草业科技学院, 四川成都 611130;
2. 四川省草原科学研究院, 四川成都 611731

通讯作者: 苟文龙,E-mail:gwl1975@163.com;马啸,E-mail:maroar@126.com
作者简介:董志晓(1993-),男,汉,河北邢台人,硕士研究生,主要从事草种质创新与育种研究,E-mail:1565752354@qq.com
基金资助:
四川省肉牛产业体系创新团队（SCCXTD-20-13）资助

Abstract

Abstract: To evaluate the effects of sweet sorghum-Lablab purpureus intercropping on the yield and quality of mixed forage,and obtain the optimal intercropping ratio of sweet sorghum and Lablab purpureus in Chengdu Plain,Lablab purpureus was intercropped with sweet sorghum (A1∶11.25 kg·hm^-2;A2∶16.88 kg·hm^-2;A3∶22.50 kg·hm^-2;A4∶28.13 kg·hm^-2;A5∶33.75 kg·hm^-2) with the control of S.dochna monoculture (A0∶18 kg·hm^-2). We also tested the agronomic characteristics of sweet sorghum,along with fresh/hay yield and nutritional components of the mixed forage. Furthermore,the economic benefit was assessed based on the increased yield of fresh forage. The results showed that, the plant height,stem diameter and stem/leaf ratio of sweet sorghum under sweet sorghum-Lablab purpureus intercropping treatment were lower than that of A0. Indicators such as crude protein,dry/fresh ratio and forage yield,however,were higher than that of A0 treatment. The highest fresh forage yield was reached a peak in A3 treatment (112 289.45 kg·hm^-2),and the net income under this treatment increased by 12 198.1 CNY·hm^-2 (Chinese Yuan,CNY) compared to the A0 treatment. Acid detergent fiber and neutral detergent Fiber contents of mixed forage under A3 treatment were lower than that of A0 treatment. According to the membership function analysis,the membership function value of A3 treatment was the highest (0.67). Comprehensive analysis indicated that A3 treatment is the optimal planting mode of sweet sorghum-Lablab purpureus intercropping to improve the yield and quality of forage grass in Chengdu Plain.

Key words: Sweet sorghum, lablab purpureus, Intercropping, Forage yield, Nutritional quality, Chengdu Plain

摘要： 为探究成都平原甜高粱（Sorghum dochna）与拉巴豆（Lablab purpureus）间作对混合饲草产量及品质的影响，并获得最佳的间作比例。本研究以甜高粱单播（A0：18 kg·hm^-2）为对照，以甜高粱中间作拉巴豆不同播量（A1：11.25 kg·hm^-2；A2：16.88 kg·hm^-2；A3：22.50 kg·hm^-2；A4：28.13 kg·hm^-2；A5：33.75 kg·hm^-2）为处理，测定收获后甜高粱的农艺性状、混合饲草鲜/干草产量和营养成分等指标，并对混合饲草鲜草产量增加部分进行经济效益评估。结果表明：甜高粱/拉巴豆处理下甜高粱的株高、茎粗、茎叶比等指标较A0处理均降低，而CP、干鲜比和饲草产量等指标均升高；其中A3处理下混合饲草的鲜草产量最高，为112 289.45 kg·hm^-2，此时净收入与A0相比增加了12 198.1元·hm^-2；A3处理下混合饲草的中性洗涤纤维（Neutral detergent fiber，NDF）和酸性洗涤纤维（Acid detergent fiber，ADF）含量较A0处理降低；隶属函数分析结果表明，A3处理的隶属函数值最高，为0.67。综合表明，在成都平原地区，18 kg·hm^-2的甜高粱间作22.50 kg·hm^-2的拉巴豆是提高饲草产量和品质的最优种植模式。

关键词: 甜高粱, 拉巴豆, 间作, 饲草产量, 营养品质, 成都平原

CLC Number:

S548

DONG Zhi-xiao, HE Run-hao, KUANG Jian-yang, NIE Cong, YANG Jian, ZHANG Jian-bo, GOU Wen-long, MA Xiao. Effects of Sweet Sorghum Intercropping with Lablab Purpureus on Yield and Quality of Mixed Forage in Chengdu Plain,China[J]. Acta Agrestia Sinica, 2021, 29(7): 1578-1583.

董志晓, 何润濠, 况鉴洋, 聂聪, 杨建, 张建波, 苟文龙, 马啸. 成都平原甜高粱间作拉巴豆对混合饲草产量及品质的影响[J]. 草地学报, 2021, 29(7): 1578-1583.

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Effects of Sweet Sorghum Intercropping with Lablab Purpureus on Yield and Quality of Mixed Forage in Chengdu Plain,China

成都平原甜高粱间作拉巴豆对混合饲草产量及品质的影响

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